This looks ridiculously intense. I loved Choi Min-sik in Oldboy. Looks like the "revenge" genre is something Asian cinema is going to dominate for a long time to come. Check it out!
http://thefilmsmith.com/2011/02/23/blood-spills-over-the-edge-of-your-screen-in-i-saw-the-devil-trailer/
http://thefilmsmith.com/2011/02/23/blood-spills-over-the-edge-of-your-screen-in-i-saw-the-devil-trailer/